This is what I made, How do I power it?

I made this mini powered speaker box to use with my laptop because the built in speakers suck on my ACER (great laptop just crap speakers) right now its powered by a INPUT: 120VAC 60Hz 21.6VA OUTPUT: 9VDC 700mA power adapter anyone have any ideas for a portable power supply so it doesn't require an outlet? I'm trying to keep it portable. right now it fits neatly in my laptop bag and sounds great, there's even an input for a Sub when I'm at home. I'd like to go USB if there is any way........ but I'm open to battery ideas P.S. if people like it let me know and I'll post it as an instructable ...... I've seen many speaker ibles on here so I wasn't gonna post it unless people want it

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nice work I wonder how it will sound!!![]
Does usb put out AC or DC power?
5V DC, as for powering solutions you could just use a 9V battery straight off. Or mabe if your OK with electronics you could do a Boost converter circuit like
Sorry hit wrong button.
Continued...

the minty boost project on this site.

-josh
chaoscampbell (author)  Weissensteinburg10 years ago
honestly all I know is its 5 volts coming out of USB
USB port gives out 5V and 500mA. Perhaps you can draw from two available ports, and drop the voltage/current with a resistor.
mrfixitrick10 years ago
You could use 9-volt batteries. 3 Lithium polymer rechargeable ones should give about 2 hours of play-time. Or you could use 6 AA batteries, put them in a Radio Shack plastic battery holder. Get the good AA's, like Duracell NiMH 2650 mah. That should be good for 3-4 hours play-time, based on full 700 ma output of your 9v. transformer.
That's the way, Bobby!